1923972980 has 12 divisors (see below), whose sum is σ = 4040343300. Its totient is φ = 769589184.

The previous prime is 1923972979. The next prime is 1923972983. The reversal of 1923972980 is 892793291.

It can be written as a sum of positive squares in 2 ways, for example, as 825183076 + 1098789904 = 28726^2 + 33148^2 .

It is a super-3 number, since 3×1923972980³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1923972983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48099305 + ... + 48099344.

It is an arithmetic number, because the mean of its divisors is an integer number (336695275).

Almost surely, 2^1923972980 is an apocalyptic number.

1923972980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1923972980 is an abundant number, since it is smaller than the sum of its proper divisors (2116370320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1923972980 is a wasteful number, since it uses less digits than its factorization.

1923972980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96198658 (or 96198656 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 1923972980 is about 43863.1163963529. The cubic root of 1923972980 is about 1243.7497015058.

The spelling of 1923972980 in words is "one billion, nine hundred twenty-three million, nine hundred seventy-two thousand, nine hundred eighty".